ProUX vs Diagram Smith

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ProUX compared with Diagram Smith
Detail	ProUX	Diagram Smith
What it does	AI UX intelligence system for product designers and founders	Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
Stage	Startup	Not given
Founded	2025	Not given
Based in	IN	Not given
Pricing model	Freemium	Freemium
Pricing	Free: $0/month with 100,000 tokens (about 15 questions or 3 screen reviews). Pro Quarterly: $57 billed quarterly (about $19/month) with 1.9 million tokens (about 215 questions or 70 screen reviews). Pro Yearly: $131 billed yearly (about $10.92/month) with 1.9 million tokens.	Free: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
Key features	Ask UX questions and get answers citing verified guidelines Audit screens measuring contrast, tap targets and text sizes from pixels Library of 50 free UX laws and guidelines Multiple AI model comparison for design analysis UX prompt optimization Unified consensus on design decisions Projects that remember product context Every finding cites its source guideline Access to Claude Opus 5, Gemini Pro and Deep Research on Pro plans	Flowchart and process diagram maker with canvas and text-to-diagram modes Text-to-diagram tools for UML, ER and sequence diagrams Chart tools: pie chart, line graph, gauge and Sankey diagram Automatic diagram layout from typed text Export to PNG, SVG and PDF without watermark Share diagrams with share links Pro: editable .drawio export and vector PDF Pro: multi-page documents and layers Diagram checks for unlabelled branches and dead ends Works on phone and computer
What makes it different	Every finding cites a verified guideline, not an opinion or guess Measures what it claims using pixel-level data, not guesses Built by certified UX professional with 19 years of practice Answers backed by universal UX/UI/CRO principles and human psychology research Instant feedback at every stage instead of waiting days for design reviews	Completely free with no account required and no watermark on exports Nothing uploaded: all work stays on your device in your browser Results computed by the same tested code, not manually typed Multiple export formats: PNG at 4 sizes, SVG and PDF Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
Community votes	0	0
DR (Domain Rating by Ahrefs)	4 +1 (up) since last check	2 no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	18	19
Referring domains (Majestic)	7	4

5 details filled in for both companies.

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